Case study: The annual energy consumption by an industry is depicted in the pie chart shown below. The management wants to implement energy conservation measures to reduce energy consumption. How would you go about in the implementation of this energy conservation project? 10% Other 6% Computers 3% Office Equipment 3% Refrigeration 2% Water Heating 25% Lighting 35% Heating 10% Cooling 6% Ventilation
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- What is Energy crisis? What are the causes of energy crisis? Explain the consequences and possible solutions of the energy crisis. Please write the sources4- Can value of the string efficiency being equal to 100%. Explain your answer.5- Outline methods used to equalize the potential across the units.6- Why an insulator is represented as a capacitor C? What are the assumptionmodes?The incremental fuel costs, in dollars per megawatthour, for two units in a plant are given by dF dP, dR dP, Select one: = 0.007P, +7 and During a 24-h period the load on each unit varies between 100 MW and 500 MW, whereas the plant output varies from 200 MW to 700 MW. (a) At what power level should unit 2 begin to take on all the additional load for the most economic operation of the plant? (b) What is the power output of the plant at this point? Neglect losses. a. a: 122.22MW. b: 222.22KW b. a: 222.22MW, b: 122.22KW ca: 122.22MW, b: 222.22MW d. a: 222.22MW, b: 122.22MW = 0.009P₂ +6
- 1.The real efficiency of the best commercial wind turbine is ......... than that of a solar cell. a. more b. equal c. less d. equal or less 2.How can asolar tower power plant supply electricity at night? a. it uses a battery as energy storage b. it pumps water to higher place c. it stores hot oil in thermal storage tanks to produce steam d. it converts electricity into hydrogen fuelb-Two aluminum and copper wire resistors consume 0.5 W when connected in parallel to 2 V DC supply. The aluminum wire is 40% length more than copper wire. Calculate the power consumed by the two resistors when connected in series to the same DC supply. Assume equal cross-section area and the resistivity of aluminum is to be 20% more than that of copper.Identify the characteristics of AC and DC voltage. Runs at a higher temperature Answer 1Choose...DCAC More dangerous to transfer Answer 2Choose...DCAC Easy to produce Answer 3Choose...DCAC Easier to transform voltages Answer 4Choose...DCAC Voltage remains at a constant value Answer 5Choose...DCAC Cheaper to produce
- power output. Question 4: An ideal PV cell with reverse saturation current of 1.5nA is operating at 35°C. The solar current at 35°C is 0.85A. Compute the output voltage and output power of the PV cell when the load drows 0.3A. haalar Please solve it in a clear handwriting. thanks in advance :)1) The incremental fuel costs, in dollars per mega watt hour for two units in a plant are given by : dF dpi = 0,007 P₁ + 7 and df₂ dP₂ = 0,009²₂ +6 24 hour period the load each unit varies between During loo Mw and 500 MW, Whereas the plant output varies from 200 MW to 700 MW. a) At what power level should unit 2 begin to take on all the additional load for the most economic operation of the plant? Select one: O a: 222, 22 MW O b: 122, 22 MW OC: 122, 22 MW Od. 222, 22 MW b) What is the power output of the plant at this point ? Neglect losses. b: 122, 22 Kw b: 222, 22 MW b: 222, 22 b: 122, 22M W on KWExplain the different categories of energy consumption (residential, commercial, and industrial) and their characteristics
- a) Explain the importance of thermal management of electronics devices. (b) Heat sink rated at 10°C/W will get 10°C hotter than the surrounding air when it dissipates 1 Watt of heat. Discuss the suitability of heat sink for above scenario in terms of thermal resistance. (c) Thermocouples are commonly used to measure temperature. There can be errors due to heat transfer by radiation. Consider a black thermocouple in a chamber with black walls Suppose the air is at 20 °C, the walls are at 100 °C, and the convective heat transfer coefficient is 15 Wm-2 k -1 . a) What temperature does the thermocouple read? b) If thermos couple sees a higher temperature than air, how could you reduce this error?Discuss the prime mover and the conversion of power energy for thermal station1/ Suppose that there are two types of H.V.T.Ls operating at the same voltage and carrying the same current, but one of them with smooth shapewhile the other with standard shape. Which of them, you will choose? a. choosing the smooth one. b. choosing the standard one. c. choosing the one with hollow construction shape. d. all these answers are wrong. 2/ As the ambient temperature in crease the disruptive critical voltage of coron a is: a. Decreased b. Increased c. No effect d. All these answers are wrong. 3/ Using HV underground cable improvevoltageprofile and power factor in any loaded inductive electrical grid because. a. Due to its inductive power effect. b. Due to resistive Effect. c. Due to its capacitive power effect. d. All of the above answers are wrong.